Sensor signals

Every sensor emits an ultrasound beam with the following geometric specification.

• Horizontal beam angle = 120°
• Vertical beam angle = 60°

The control module measures the distance between the sensor and any obstacle in cyclical intervals. Measurement is based on echo-sounding techniques.

The sensors are actuated briefly at regular intervals and transmit ultrasonic waves. Next, the sensors are switched to receive mode, and receive the reflecting soundwaves. The control module then calculates the distance between the sensor and the obstacle from the running time of the soundwaves.

Fig 1: Identifying Measurement Range Of ParkAssistent Sensor

Courtesy of PORSCHE OF NORTH AMERICA, INC.

Fig 2: Measuring Distance Between ParkAssistent Sensor And Any Obstacle

Courtesy of PORSCHE OF NORTH AMERICA, INC.